<?php

class ControllerCommonSeoUrl extends Controller {

    public function index() {
        //menu_active
        $this->session->data['menu_active'] = 'home';
        // Add rewrite to url class
        if ($this->config->get('config_seo_url')) {
            $this->url->addRewrite($this);
        }
        // Decode URL
        if (isset($this->request->get['_route_'])) {
            $parts = explode('/', $this->request->get['_route_']);
            foreach ($parts as $part) {
                $query = $this->db->query("SELECT * FROM " . DB_PREFIX . "url_alias WHERE keyword = '" . $this->db->escape($part) . "'");
                if ($query->num_rows) {
                    $url = explode('=', $query->row['query']);
                    if ($url[0] == 'product_id') {
                        $this->request->get['product_id'] = $url[1];
                        $this->session->data['menu_active'] = 'sanpham';
                    }
                    if ($url[0] == 'sanpham') {
                        $this->request->get['sanpham'] = $url[1];
                        $this->session->data['menu_active'] = 'sanpham';
                    }
                    
                    if ($url[0] == 'news') {
                        $this->request->get['news'] = 'news/news';
                        $this->session->data['menu_active'] = 'news';
                    }
                    if ($url[0] == 'contact') {
                        $this->request->get['route'] = 'information/contact';
                        $this->session->data['menu_active'] = 'contact';
                    }
                    
                    if ($url[0] == 'category_id') {
                        if (!isset($this->request->get['path'])) {
                            $this->request->get['path'] = $url[1];
                        } else {
                            $this->request->get['path'] .= '_' . $url[1];
                        }
                        $this->session->data['menu_active'] = 'sanpham';
                    }

                    if ($url[0] == 'manufacturer_id') {
                        $this->request->get['manufacturer_id'] = $url[1];
                    }

                    if ($url[0] == 'information_id') {
                        $this->request->get['information_id'] = $url[1];
                        $this->session->data['menu_active'] = 'about';
                    }
                } else {
                    $this->request->get['route'] = 'error/not_found';
                }
            }

            if (isset($this->request->get['product_id'])) {
                $this->request->get['route'] = 'product/product';
            } elseif (isset($this->request->get['path'])) {
                $this->request->get['route'] = 'product/category';
            } elseif (isset($this->request->get['manufacturer_id'])) {
                $this->request->get['route'] = 'product/manufacturer/product';
            } elseif (isset($this->request->get['sanpham'])) {
                $this->request->get['route'] = 'product/sanpham';
            } elseif (isset($this->request->get['news'])) {
                if (isset($parts[1]) && isset($parts[2]) && $parts[1] != '' && $parts[2] != '') {
                    $this->request->get['route'] = "news/detail";
                    $this->request->get['cat'] = $parts[1];
                    $this->request->get['seo_name'] = str_replace('.html', '', $parts[2]);
                } elseif (isset($parts[1]) && $parts[1] != '') {
                    $this->request->get['route'] = "news/category_news";
                    $this->request->get['cat'] = str_replace('.html', '', $parts[1]);
                } else {
                    $this->request->get['route'] = 'news/news';
                }
            } elseif (isset($this->request->get['information_id'])) {
                $this->request->get['route'] = 'information/information';
            } elseif (isset($this->request->get['contact'])) {
                $this->request->get['route'] = 'information/contact';
            }

            if (isset($this->request->get['route'])) {
                return $this->forward($this->request->get['route']);
            }
        } 
    }

    public function rewrite($link) {
        if ($this->config->get('config_seo_url')) {
            $url_data = parse_url(str_replace('&amp;', '&', $link));

            $url = '';

            $data = array();

            parse_str($url_data['query'], $data);

            foreach ($data as $key => $value) {
                if (isset($data['route'])) {
                    if (($data['route'] == 'product/product' && $key == 'product_id') || (($data['route'] == 'product/manufacturer/product' || $data['route'] == 'product/product') && $key == 'manufacturer_id') || ($data['route'] == 'information/information' && $key == 'information_id')) {
                        $query = $this->db->query("SELECT * FROM " . DB_PREFIX . "url_alias WHERE `query` = '" . $this->db->escape($key . '=' . (int) $value) . "'");

                        if ($query->num_rows) {
                            $url .= '/' . $query->row['keyword'];

                            unset($data[$key]);
                        }
                    } elseif ($key == 'path') {
                        $categories = explode('_', $value);

                        foreach ($categories as $category) {
                            $query = $this->db->query("SELECT * FROM " . DB_PREFIX . "url_alias WHERE `query` = 'category_id=" . (int) $category . "'");

                            if ($query->num_rows) {
                                $url .= '/' . $query->row['keyword'];
                            }
                        }

                        unset($data[$key]);
                    }
                }
            }

            if ($url) {
                unset($data['route']);

                $query = '';

                if ($data) {
                    foreach ($data as $key => $value) {
                        $query .= '&' . $key . '=' . $value;
                    }

                    if ($query) {
                        $query = '?' . trim($query, '&');
                    }
                }

                return $url_data['scheme'] . '://' . $url_data['host'] . (isset($url_data['port']) ? ':' . $url_data['port'] : '') . str_replace('/index.php', '', $url_data['path']) . $url . $query;
            } else {
                return $link;
            }
        } else {
            return $link;
        }
    }

}

?>